Knowledge of epidemiology and statistics for an ophthalmic practitioner.
J Indian Med Assoc
;
2001 Oct; 99(10): 561-4, 566
Article
Dans Anglais
| IMSEAR
| ID: sea-102273
ABSTRACT
Ophthalmologists are frequently confronted with treatment options that claim to be better than those currently in use. Statistically significant P values are invariably provided by way of proof. For many ophthalmologists a simple look at this revered P value is enough evidence that a statistically significant result has indeed been obtained. Unfortunately, traditional interpretation of a study based on the P value at an arbitrary cut-off (P<0.05 or any other value) limits the ability to fully appreciate clinical implications. In this article the authors introduce the reader to and illustrate the use of "confidence intervals" as opposed to P values in examining the applicability of study results. Further, what is statistically significant may not necessarily be clinically significant; perhaps not enough for the practitioner to change from the currently preferred method of treatment. To resolve this, the authors have also used common ophthalmic examples to introduce the "number needed to treat", as a simple clinical approach for the practising ophthalmologist wishing to assess the clinical significance of treatment options.
Texte intégral:
Disponible
Indice:
IMSEAR (Asie du Sud-Est)
Sujet Principal:
Ophtalmologie
/
Humains
/
Intervalles de confiance
/
Méthodes épidémiologiques
/
Essais cliniques comme sujet
/
Interprétation statistique de données
/
Maladies de l'oeil
Type d'étude:
Étude de dépistage
langue:
Anglais
Texte intégral:
J Indian Med Assoc
Année:
2001
Type:
Article
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